So here's the deal. I somehow managed to miss the deadline for extending AppleCare earlier this year...and I'm about to pay for this mistake, big time... Wife's late-2010 MBA 11" won't stay on long enough to log in. Tried it all - SMC and PRAM resets, DiskWarrior scan, complete hardware diagnostics run, wiped SSD and reinstalled OS X. Nothing fixes this glitch. I can temporarily keep it on by holding down the Option key during all phases of bootup. Once logged in and on the desktop, I can release the key and then I have to watch for the shutdown pop-up window. As soon as it pops up, I have 2-3 seconds to hit the cancel key, otherwise it powers off. I managed to get all of our data off the SSD by hitting the cancel key a lot. I took it to an authorized repair center here in Mexico and they diagnosed the logic board which they will repair for about $850 USD. My one main concern is whether or not Apple will warranty the replacement logic board. If so, I think we're all good. If not, then what? Can anyone tell me what type of warranty might be in place this replacement part?